During boot, everything is OK, then, when i'm at my knoppix desktop and i go (for example) to google.com, it says
"unknown error
Host not found"

i tryed "netcardconfig", but it failed
i cant ping websites (host not found)
pinging IPs have some effect (pinging xx.xx.xx.xx T=0), i dont think it is is sending anything

could someone please tell me how to make knoppix find my internet card and get it online?

PS: I have no clue what my card is and no clue how to find